Constraining of jet medium interaction in high-energy heavy-ion collisions

[摘要] In this talk, we discuss jet medium interaction, in particular, γ-tagged jet energy loss and γ-jet correlation in Pb+Pb collisions at √s = 2.76 TeV within a linearized Boltzmann transport (LBT) model. It is shown that both recoiled and radiated partons have considerable contribution to the energy of a reconstructed jet. LBT results agree well with experimental data and also indicate a sizable azimuthal angle broadening of γ-jet correlation which should be observable with reduced experimental uncertainties. A γ-tagged jet fragmentation function is also shown as a better measure of jet quenching.

[发布机构] Departamento de Física de Partículas, IGFAE, Universidade de Santiago de Compostela, Santiago de Compostela, Galicia; E-15706, Spain^1;Key Laboratory of Quark and Lepton Physics (MOE), Institute of Particle Physics, Central China Normal University, Wuhan; 430079, China^2;Nuclear Science Division, Mailstop 70R0319, Lawrence Berkeley National Laboratory, Berkeley; CA; 94740, United States^3

[关键词] Azimuthal angle;Boltzmann transport;Experimental uncertainty;High energy heavy-ion collision;Jet energy;Jet fragmentation;Jet quenching